3 files changed, 54 insertions, 8 deletions

diff --git a/libglusterfs/src/common-utils.h b/libglusterfs/src/common-utils.h
index 75692309e14..d9d3082c0fc 100644
--- a/libglusterfs/src/common-utils.h
+++ b/libglusterfs/src/common-utils.h
@@ -172,7 +172,6 @@ void gf_print_trace (int32_t signal, glusterfs_ctx_t *ctx);
                 }                                                       \
         } while (0)
 
-
 #define GF_IF_INTERNAL_XATTR_GOTO(pattern, dict, op_errno, label)       \
         do {                                                            \
                 if (!dict) {                                            \
@@ -180,13 +179,9 @@ void gf_print_trace (int32_t signal, glusterfs_ctx_t *ctx);
                                 "setxattr dict is null");               \
                         goto label;                                     \
                 }                                                       \
-                int _handle_keyvalue_pair (dict_t *d, char *k,          \
-                                           data_t *v, void *tmp)        \
-                {                                                       \
-                        return 0;                                       \
-                }                                                       \
-                if (dict_foreach_fnmatch (dict, pattern,                  \
-                                          _handle_keyvalue_pair, NULL) > 0) { \
+                if (dict_foreach_fnmatch (dict, pattern,                \
+                                          dict_null_foreach_fn,         \
+                                          NULL) > 0) {                  \
                         op_errno = EPERM;                               \
                         gf_log (this->name, GF_LOG_ERROR,               \
                                 "attempt to set internal"               \
diff --git a/libglusterfs/src/dict.c b/libglusterfs/src/dict.c
index e9b8da1c4e9..a8cdeaf28f8 100644
--- a/libglusterfs/src/dict.c
+++ b/libglusterfs/src/dict.c
@@ -1079,6 +1079,13 @@ data_to_bin (data_t *data)
 }
 
 int
+dict_null_foreach_fn (dict_t *d, char *k,
+                      data_t *v, void *tmp)
+{
+        return 0;
+}
+
+int
 dict_foreach (dict_t *dict,
               int (*fn)(dict_t *this,
                         char *key,
@@ -1148,6 +1155,45 @@ dict_foreach_fnmatch (dict_t *dict, char *pattern,
 }
 
 
+/**
+ * dict_keys_join - pack the keys of the dictionary in a buffer.
+ *
+ * @value     : buffer in which the keys will be packed (can be NULL)
+ * @size      : size of the buffer which is sent (can be 0, in which case buffer
+ *              is not packed but only length is returned)
+ * @dict      : dictionary of which all the keys will be packed
+ * @filter_fn : keys matched in filter_fn() is counted.
+ *
+ * @return : @length of string after joining keys.
+ *
+ */
+
+int
+dict_keys_join (void *value, int size, dict_t *dict,
+                int (*filter_fn)(char *k))
+{
+	int          len = 0;
+        data_pair_t *pairs = NULL;
+        data_pair_t *next  = NULL;
+
+        pairs = dict->members_list;
+        while (pairs) {
+                next = pairs->next;
+
+                if (filter_fn && filter_fn (pairs->key))
+                        continue;
+
+		if (value && (size > len))
+			strncpy (value + len, pairs->key, size - len);
+
+                len += (strlen (pairs->key) + 1);
+
+                pairs = next;
+        }
+
+	return len;
+}
+
 static int
 _copy (dict_t *unused,
        char *key,
diff --git a/libglusterfs/src/dict.h b/libglusterfs/src/dict.h
index dbf98046f4f..c7606352cc1 100644
--- a/libglusterfs/src/dict.h
+++ b/libglusterfs/src/dict.h
@@ -177,7 +177,12 @@ int dict_foreach_fnmatch (dict_t *dict, char *pattern,
                                     void *data),
                           void *data);
 
+int dict_null_foreach_fn (dict_t *d, char *k,
+                          data_t *v, void *tmp);
+
 dict_t *dict_copy (dict_t *this, dict_t *new);
+int dict_keys_join (void *value, int size, dict_t *dict,
+                    int (*filter_fn)(char *key));
 
 /* CLEANED UP FUNCTIONS DECLARATIONS */
 GF_MUST_CHECK dict_t *dict_new (void);